/Engine/Source/Editor/StaticMeshEditor/Public/StaticMeshEditorSubsystemHelpers.h
struct FMergeStaticMeshActorsOptions : public [FJoinStaticMeshActorsOptions](API\Editor\StaticMeshEditor\FJoinStaticMeshActorsOptions)
FString
BasePackageName
The package path you want to save to. ie: /Game/MyFolder.
bool
bSpawnMergedActor
Spawn the new merged actors.
FMeshMergingSet...
MeshMergingSettings